/*
Theme Name: Research01 Blog
Theme URI: https://research01.net/blog/
Author: Research01
Author URI: https://research01.net/
Description: 仮想通貨詐欺調査情報ブログ用カスタムテーマ。SEO最適化済み、シンプルでプロフェッショナルなデザイン。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: research01-blog
Tags: blog, custom-background, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */
:root {
  --color-bg:           #0b0f1a;
  --color-surface:      #131825;
  --color-surface-2:    #1c2234;
  --color-border:       #252d42;
  --color-accent:       #d4a017;
  --color-accent-light: #f0be3c;
  --color-text:         #e8eaf0;
  --color-text-muted:   #8a92a8;
  --color-text-light:   #b0b8cc;
  --color-link:         #5b8af5;
  --color-link-hover:   #7fa3ff;
  --color-danger:       #e85555;

  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;

  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.4);
  --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.6);

  --transition: 0.2s ease;

  --container-width: 1100px;
  --content-width:   720px;
  --sidebar-width:   300px;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-link-hover);
}

ul, ol {
  list-style: none;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.site-main {
  flex: 1;
  padding: 48px 0 64px;
}

.content-area {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: 48px;
  align-items: start;
}

/* グリッドの子要素がはみ出さないよう min-width を 0 に設定 */
.primary-content {
  min-width: 0;
  overflow: hidden;
}

.sidebar {
  min-width: 0;
}

@media (max-width: 900px) {
  .content-area {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  position: relative;
  background: var(--color-bg);
  overflow: hidden;
  padding: 80px 0 72px;
  border-bottom: 1px solid var(--color-border);
}

/* ブロックチェーン背景SVG */
.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  user-select: none;
}

.hero-bg-svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 静的な接続線 */
.bc-line {
  stroke: rgba(212, 160, 23, 0.08);
  stroke-width: 1;
  fill: none;
}

/* 光が流れる線 */
.bc-flow {
  stroke: rgba(212, 160, 23, 0);
  stroke-width: 1.5;
  fill: none;
  stroke-dasharray: 60 400;
  stroke-dashoffset: 0;
}

.bc-flow.f1 { animation: flow-line 6s linear 0s   infinite; }
.bc-flow.f2 { animation: flow-line 6s linear 1.5s infinite; }
.bc-flow.f3 { animation: flow-line 6s linear 3s   infinite; }
.bc-flow.f4 { animation: flow-line 6s linear 4.5s infinite; }

@keyframes flow-line {
  0%   { stroke: rgba(212, 160, 23, 0);    stroke-dashoffset: 460; }
  10%  { stroke: rgba(212, 160, 23, 0.5); }
  50%  { stroke: rgba(240, 190, 60, 0.6); }
  90%  { stroke: rgba(212, 160, 23, 0.3); }
  100% { stroke: rgba(212, 160, 23, 0);    stroke-dashoffset: 0; }
}

/* ノード */
.bc-node {
  fill: rgba(212, 160, 23, 0.15);
  stroke: rgba(212, 160, 23, 0.3);
  stroke-width: 1;
}

.bc-node.n1  { animation: node-blink 4s ease-in-out 0s    infinite; }
.bc-node.n2  { animation: node-blink 4s ease-in-out 0.6s  infinite; }
.bc-node.n3  { animation: node-blink 4s ease-in-out 1.2s  infinite; }
.bc-node.n4  { animation: node-blink 4s ease-in-out 0.3s  infinite; }
.bc-node.n5  { animation: node-blink 4s ease-in-out 1.8s  infinite; }
.bc-node.n6  { animation: node-blink 4s ease-in-out 2.4s  infinite; }
.bc-node.n7  { animation: node-blink 4s ease-in-out 0.9s  infinite; }
.bc-node.n8  { animation: node-blink 4s ease-in-out 1.5s  infinite; }
.bc-node.n9  { animation: node-blink 4s ease-in-out 0.4s  infinite; }
.bc-node.n10 { animation: node-blink 4s ease-in-out 2.1s  infinite; }
.bc-node.n11 { animation: node-blink 4s ease-in-out 1.1s  infinite; }
.bc-node.n12 { animation: node-blink 4s ease-in-out 3.0s  infinite; }
.bc-node.n13 { animation: node-blink 4s ease-in-out 2.7s  infinite; }

@keyframes node-blink {
  0%, 100% { fill: rgba(212, 160, 23, 0.12); stroke: rgba(212, 160, 23, 0.25); }
  50%       { fill: rgba(212, 160, 23, 0.40); stroke: rgba(240, 190, 60, 0.70); }
}

/* Pulse リング */
.bc-pulse {
  fill: none;
  stroke: rgba(212, 160, 23, 0.4);
  stroke-width: 1.5;
  transform-box: fill-box;
  transform-origin: center;
}

.bc-pulse.p1 { animation: pulse-ring 3.5s ease-out 0s   infinite; }
.bc-pulse.p2 { animation: pulse-ring 3.5s ease-out 1.2s infinite; }
.bc-pulse.p3 { animation: pulse-ring 3.5s ease-out 2.4s infinite; }

@keyframes pulse-ring {
  0%   { r: 8;  opacity: 0.6; }
  100% { r: 28; opacity: 0; }
}

/* 全体をゆっくりドリフト */
.hero-bg-svg {
  animation: hero-drift 30s ease-in-out alternate infinite;
}

@keyframes hero-drift {
  0%   { transform: translateX(0)    translateY(0); }
  100% { transform: translateX(-30px) translateY(-12px); }
}

/* コンテンツ */
.hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.hero-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  background: rgba(212, 160, 23, 0.1);
  border: 1px solid rgba(212, 160, 23, 0.3);
  border-radius: 999px;
  padding: 5px 16px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(1.625rem, 4vw, 2.625rem);
  font-weight: 900;
  line-height: 1.35;
  color: var(--color-text);
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.hero-desc {
  font-size: clamp(0.875rem, 1.5vw, 1rem);
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  color: #0b0f1a;
  font-weight: 800;
  font-size: 0.9375rem;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(212, 160, 23, 0.4);
  transition: filter var(--transition), transform var(--transition), box-shadow var(--transition);
}

.hero-btn-primary:hover {
  filter: brightness(1.08);
  color: #0b0f1a;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(212, 160, 23, 0.55);
}

.hero-btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--color-text-light);
  font-weight: 700;
  font-size: 0.9375rem;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.hero-btn-secondary:hover {
  border-color: rgba(212, 160, 23, 0.5);
  color: var(--color-accent-light);
  background: rgba(212, 160, 23, 0.06);
}

/* アクセシビリティ: アニメーション無効設定への対応 */
@media (prefers-reduced-motion: reduce) {
  .bc-node,
  .bc-flow,
  .bc-pulse,
  .hero-bg-svg {
    animation: none;
  }
}

/* ==========================================================================
   Site Header
   ========================================================================== */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 24px;
}

.site-branding {
  flex-shrink: 0;
}

.site-title {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.3;
}

.site-title a {
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-title a:hover {
  color: var(--color-accent-light);
}

.site-title .badge {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--color-accent);
  color: #0b0f1a;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.site-description {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Main Navigation */
.main-navigation {
  display: flex;
  align-items: center;
}

.main-navigation ul {
  display: flex;
  gap: 4px;
}

.main-navigation a {
  display: block;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.main-navigation a:hover,
.main-navigation .current-menu-item > a {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  line-height: 1;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .main-navigation {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    display: none;
  }

  .main-navigation.is-open {
    display: block;
  }

  .main-navigation ul {
    flex-direction: column;
    gap: 2px;
  }
}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */
.breadcrumb {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.breadcrumb li + li::before {
  content: '›';
  margin-right: 4px;
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

.breadcrumb a:hover {
  color: var(--color-text);
}

.breadcrumb [aria-current="page"] {
  color: var(--color-text-light);
}

/* ==========================================================================
   Post Card (Archive / Index)
   ========================================================================== */
.posts-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.post-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.post-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.post-card-inner {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 0;
}

@media (max-width: 640px) {
  .post-card-inner {
    grid-template-columns: 1fr;
  }
}

.post-card-thumbnail {
  position: relative;
  overflow: hidden;
  background: var(--color-surface-2);
}

.post-card-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.post-card:hover .post-card-thumbnail img {
  transform: scale(1.04);
}

.post-card-thumbnail .no-image {
  height: 100%;
  min-height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-border);
}

.post-card-body {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.post-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.post-card-categories a {
  display: inline-flex;
  align-items: center;
  background: rgba(212, 160, 23, 0.12);
  color: var(--color-accent-light);
  border: 1px solid rgba(212, 160, 23, 0.25);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
}

.post-card-categories a:hover {
  background: rgba(212, 160, 23, 0.22);
}

.post-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.5;
}

.post-card-title a {
  color: var(--color-text);
}

.post-card-title a:hover {
  color: var(--color-accent-light);
}

.post-card-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-readmore {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-top: auto;
}

.post-card-readmore:hover {
  color: var(--color-accent-light);
}

.post-card-readmore::after {
  content: '→';
  transition: transform var(--transition);
}

.post-card:hover .post-card-readmore::after {
  transform: translateX(4px);
}

/* ==========================================================================
   Pagination
   ========================================================================== */
.pagination {
  margin-top: 40px;
}

.pagination .nav-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 8px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  color: var(--color-text-light);
  background: var(--color-surface);
  transition: all var(--transition);
}

.pagination .page-numbers:hover,
.pagination .page-numbers.current {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #0b0f1a;
}

/* ==========================================================================
   Single Post
   ========================================================================== */
.single-post-header {
  margin-bottom: 40px;
  overflow-wrap: break-word;
  word-break: break-word;
}

.single-post-header .post-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.single-post-header .post-categories a {
  display: inline-flex;
  align-items: center;
  background: rgba(212, 160, 23, 0.12);
  color: var(--color-accent-light);
  border: 1px solid rgba(212, 160, 23, 0.25);
  border-radius: var(--radius-sm);
  padding: 3px 10px;
  font-size: 0.8125rem;
  font-weight: 600;
}

.single-post-header h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 16px;
}

.single-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}

.single-post-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.post-thumbnail-wrap {
  margin-bottom: 36px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  width: 100%;
  max-width: 100%;
}

.post-thumbnail-wrap img {
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 480px;
  object-fit: cover;
  display: block;
}

/* Post Content */
.entry-content {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text-light);
  overflow-wrap: break-word;
  word-break: break-word;
  overflow: hidden;
}

.entry-content h1,
.entry-content h2,
.entry-content h3,
.entry-content h4,
.entry-content h5,
.entry-content h6 {
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.4;
  margin-top: 2em;
  margin-bottom: 0.75em;
}

.entry-content h2 {
  font-size: 1.5rem;
  padding: 12px 16px 12px 20px;
  border-left: 4px solid var(--color-accent);
  background: var(--color-surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.entry-content h3 {
  font-size: 1.25rem;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.entry-content h4 { font-size: 1.125rem; }
.entry-content h5 { font-size: 1rem; }
.entry-content h6 { font-size: 0.9375rem; }

.entry-content p {
  margin-bottom: 1.5em;
}

.entry-content a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.entry-content a:hover {
  color: var(--color-link-hover);
}

.entry-content ul,
.entry-content ol {
  margin-bottom: 1.5em;
  padding-left: 1.5em;
  list-style: revert;
}

.entry-content li {
  margin-bottom: 0.4em;
}

.entry-content blockquote {
  margin: 2em 0;
  padding: 16px 20px;
  border-left: 4px solid var(--color-surface-2);
  background: var(--color-surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-muted);
  font-style: italic;
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5em;
  font-size: 0.9375rem;
  overflow-x: auto;
  display: block;
}

.entry-content th,
.entry-content td {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.entry-content th {
  background: var(--color-surface-2);
  font-weight: 700;
  color: var(--color-text);
}

.entry-content tr:nth-child(even) td {
  background: rgba(19, 24, 37, 0.5);
}

.entry-content pre {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 1.5em;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
}

.entry-content code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 3px;
  padding: 2px 6px;
}

.entry-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: inherit;
}

.entry-content img {
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.entry-content .wp-caption {
  max-width: 100%;
}

.entry-content .wp-caption-text {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 6px;
}

/* Warning/Info boxes */
.entry-content .warning-box,
.entry-content .info-box {
  padding: 16px 20px;
  border-radius: var(--radius-md);
  margin-bottom: 1.5em;
  border: 1px solid;
}

.entry-content .warning-box {
  background: rgba(232, 85, 85, 0.08);
  border-color: rgba(232, 85, 85, 0.3);
  color: #f08080;
}

.entry-content .info-box {
  background: rgba(91, 138, 245, 0.08);
  border-color: rgba(91, 138, 245, 0.3);
  color: #90b0f8;
}

/* Post Footer */
.single-post-footer {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.post-tags a {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  transition: all var(--transition);
}

.post-tags a::before {
  content: '#';
  color: var(--color-accent);
}

.post-tags a:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* Post Navigation */
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.post-navigation .nav-link {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color var(--transition);
}

.post-navigation .nav-link:hover {
  border-color: var(--color-accent);
}

.post-navigation .nav-prev { text-align: left; }
.post-navigation .nav-next { text-align: right; grid-column: 2; }

.post-navigation .nav-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

.post-navigation .nav-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (max-width: 520px) {
  .post-navigation {
    grid-template-columns: 1fr;
  }

  .post-navigation .nav-next {
    grid-column: 1;
    text-align: left;
  }
}

/* ==========================================================================
   Post CTA Area (記事下ランキング誘導 & PRバナー)
   ========================================================================== */
.post-cta-area {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ランキング誘導ボタンブロック */
.post-cta-ranking {
  background: linear-gradient(135deg, #131825 0%, #1a2238 100%);
  border: 1px solid rgba(212, 160, 23, 0.35);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  text-align: center;
}

.post-cta-label {
  font-size: 0.8125rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.post-cta-title {
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 12px;
}

.post-cta-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.post-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--color-accent);
  color: #0b0f1a;
  font-weight: 800;
  font-size: 1rem;
  padding: 14px 36px;
  border-radius: var(--radius-md);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(212, 160, 23, 0.35);
}

.post-cta-btn:hover {
  background: var(--color-accent-light);
  color: #0b0f1a;
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212, 160, 23, 0.5);
}

/* PR バナー：ワンダーウォール */
.post-pr-banner {
  position: relative;
  background: linear-gradient(160deg, #17203a 0%, #0f1628 60%, #1a1508 100%);
  border: 1px solid rgba(212, 160, 23, 0.5);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-align: center;
  padding: 36px 32px 32px;
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(212, 160, 23, 0.15);
  transition: border-color var(--transition), box-shadow var(--transition);
}

/* 上部の光彩ライン */
.post-pr-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-accent), var(--color-accent-light), var(--color-accent), transparent);
}

.post-pr-banner:hover {
  border-color: rgba(212, 160, 23, 0.8);
  box-shadow: 0 8px 48px rgba(0, 0, 0, 0.6), 0 0 32px rgba(212, 160, 23, 0.15), inset 0 1px 0 rgba(212, 160, 23, 0.2);
}

.pr-label {
  display: inline-block;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  padding: 2px 7px;
  line-height: 1.6;
  margin-bottom: 14px;
}

.pr-banner-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.pr-banner-stars {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.pr-banner-stars .stars {
  font-size: 1.5rem;
  color: var(--color-accent);
  letter-spacing: 3px;
  line-height: 1;
}

.pr-banner-stars .stars-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent-light);
}

.pr-banner-rank {
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.pr-banner-rank strong {
  font-size: 1.125rem;
}

.pr-banner-name {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 14px;
  line-height: 1.3;
}

.pr-banner-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 18px;
  max-width: 540px;
}

.pr-banner-points {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
  margin-bottom: 28px;
}

.pr-banner-points li {
  font-size: 0.875rem;
  color: var(--color-text-light);
  font-weight: 600;
}

.pr-banner-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  color: #0b0f1a;
  font-weight: 800;
  font-size: 1.0625rem;
  padding: 16px 48px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 24px rgba(212, 160, 23, 0.45);
  transition: filter var(--transition), transform var(--transition), box-shadow var(--transition);
  letter-spacing: 0.02em;
}

.pr-banner-btn:hover {
  filter: brightness(1.1);
  color: #0b0f1a;
  transform: translateY(-3px);
  box-shadow: 0 8px 36px rgba(212, 160, 23, 0.65);
}

.pr-banner-note {
  margin-top: 12px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

@media (max-width: 520px) {
  .post-pr-banner {
    padding: 28px 20px 24px;
  }

  .pr-banner-name {
    font-size: 1.25rem;
  }

  .pr-banner-btn {
    width: 100%;
    padding: 15px 24px;
  }
}

/* ==========================================================================
   Related Posts
   ========================================================================== */
.related-posts {
  margin-top: 48px;
}

.section-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.related-posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

@media (max-width: 640px) {
  .related-posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 420px) {
  .related-posts-grid {
    grid-template-columns: 1fr;
  }
}

.related-post-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}

.related-post-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.related-post-thumbnail {
  height: 120px;
  background: var(--color-surface-2);
  overflow: hidden;
}

.related-post-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.related-post-card:hover .related-post-thumbnail img {
  transform: scale(1.05);
}

.related-post-body {
  padding: 12px 14px;
}

.related-post-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-post-title a {
  color: inherit;
}

.related-post-title a:hover {
  color: var(--color-accent-light);
}

/* ==========================================================================
   Sidebar
   ========================================================================== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  transition: border-color var(--transition);
}

.widget:hover {
  border-color: rgba(212, 160, 23, 0.2);
}

.widget-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

/* ウィジェットタイトル左のアクセントバー */
.widget-title::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 0;
  bottom: 12px;
  width: 3px;
  background: var(--color-accent);
  border-radius: 0 2px 2px 0;
}

/* CTA Widget */
.widget-cta {
  background: linear-gradient(135deg, #1a2035 0%, #13182a 100%);
  border-color: rgba(212, 160, 23, 0.3);
  text-align: center;
}

.widget-cta .cta-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

.widget-cta p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.7;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--color-accent);
  color: #0b0f1a;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  transition: background var(--transition), transform var(--transition);
  border: none;
  cursor: pointer;
  width: 100%;
}

.btn-primary:hover {
  background: var(--color-accent-light);
  color: #0b0f1a;
  transform: translateY(-1px);
}

/* Widget: Recent Posts */
.widget-recent-posts ul {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.widget-recent-posts li {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 10px;
  align-items: start;
}

.widget-recent-posts .thumb {
  width: 60px;
  height: 48px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-surface-2);
  flex-shrink: 0;
}

.widget-recent-posts .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.widget-recent-posts .post-title {
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.widget-recent-posts .post-title a {
  color: inherit;
}

.widget-recent-posts .post-title a:hover {
  color: var(--color-accent-light);
}

.widget-recent-posts .post-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 3px;
}

/* Widget: Categories */
.widget-categories ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.widget-categories a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-text-light);
  transition: all var(--transition);
}

.widget-categories a:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.widget-categories .count {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 1px 8px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* Search Widget */
.widget-search .search-form {
  display: flex;
  gap: 8px;
}

.widget-search input[type="search"] {
  flex: 1;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 8px 12px;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition);
  min-width: 0;
}

.widget-search input[type="search"]::placeholder {
  color: var(--color-text-muted);
}

.widget-search input[type="search"]:focus {
  border-color: var(--color-accent);
}

.widget-search button[type="submit"] {
  background: var(--color-accent);
  color: #0b0f1a;
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}

.widget-search button[type="submit"]:hover {
  background: var(--color-accent-light);
}

/* ==========================================================================
   Archive / Category Header
   ========================================================================== */
.archive-header {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 32px;
}

.archive-header .archive-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.archive-header h1 {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 10px;
}

.archive-header .archive-description {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   404 Page
   ========================================================================== */
.error-404 {
  text-align: center;
  padding: 80px 0;
}

.error-404 .error-code {
  font-size: 8rem;
  font-weight: 900;
  color: var(--color-surface-2);
  line-height: 1;
  margin-bottom: 16px;
}

.error-404 h1 {
  font-size: 1.5rem;
  color: var(--color-text);
  margin-bottom: 12px;
}

.error-404 p {
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

/* ==========================================================================
   Comments
   ========================================================================== */
.comments-area {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.comments-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-text);
}

.comment-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

.comment-body {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
}

.comment-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.comment-author .fn {
  font-weight: 700;
  color: var(--color-text);
  font-style: normal;
}

.comment-content p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Comment Form */
.comment-respond {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
}

.comment-reply-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
}

.comment-form label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-light);
  margin-bottom: 6px;
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  padding: 10px 14px;
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition);
  margin-bottom: 16px;
}

.comment-form textarea {
  min-height: 140px;
  resize: vertical;
}

.comment-form input:focus,
.comment-form textarea:focus {
  border-color: var(--color-accent);
}

.comment-form .form-submit {
  margin-bottom: 0;
}

.comment-form #submit {
  background: var(--color-accent);
  color: #0b0f1a;
  border: none;
  border-radius: var(--radius-md);
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 700;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background var(--transition);
}

.comment-form #submit:hover {
  background: var(--color-accent-light);
}

/* ==========================================================================
   Site Footer
   ========================================================================== */
.site-footer {
  background: var(--color-surface);
  border-top: 2px solid var(--color-border);
  padding: 56px 0 0;
  position: relative;
}

/* フッター上部のゴールドライン */
.site-footer::before {
  content: '';
  position: absolute;
  top: -2px; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--color-accent) 30%, var(--color-accent-light) 50%, var(--color-accent) 70%, transparent 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-border);
}

@media (max-width: 700px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.footer-brand .site-title {
  font-size: 1.125rem;
  margin-bottom: 12px;
}

.footer-brand .site-title a {
  color: var(--color-text);
  font-weight: 700;
}

.footer-brand .site-title a:hover {
  color: var(--color-accent-light);
}

.footer-brand-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
  max-width: 420px;
}

.footer-ranking-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(212, 160, 23, 0.1);
  border: 1px solid rgba(212, 160, 23, 0.35);
  color: var(--color-accent-light);
  font-size: 0.875rem;
  font-weight: 700;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  transition: background var(--transition), border-color var(--transition);
}

.footer-ranking-link:hover {
  background: rgba(212, 160, 23, 0.18);
  border-color: var(--color-accent);
  color: var(--color-accent-light);
}

.footer-col-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition), padding-left var(--transition);
  display: block;
}

.footer-nav a:hover {
  color: var(--color-text);
  padding-left: 6px;
}

.footer-bottom {
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom .copyright {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.footer-bottom-nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-bottom-nav a {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.footer-bottom-nav a:hover {
  color: var(--color-text);
}

/* ==========================================================================
   Search Results
   ========================================================================== */
.search-header {
  margin-bottom: 28px;
}

.search-header h1 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.search-header p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.search-header .search-keyword {
  color: var(--color-accent-light);
  font-weight: 700;
}

.no-results {
  text-align: center;
  padding: 60px 0;
}

.no-results h2 {
  font-size: 1.25rem;
  color: var(--color-text);
  margin-bottom: 10px;
}

.no-results p {
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

/* ==========================================================================
   Accessibility & Focus
   ========================================================================== */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  word-wrap: normal;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 8px;
  z-index: 9999;
  background: var(--color-accent);
  color: #0b0f1a;
  padding: 8px 16px;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-weight: 700;
  font-size: 0.875rem;
}

.skip-link:focus {
  top: 0;
}

/* ==========================================================================
   Utilities
   ========================================================================== */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.visually-hidden { @extend .screen-reader-text; }